us at s f gvment gov tv dot ordinary care an and before i be a slave i'll be buried in my grave and go home to my lord and be free no more violence no more violence no more violence over me over me and before i be a slave i'll be buried in my grave and go home to my lord and be free >> i want y'all to sing it with me now. ♪ oh, oh, freedom oh, freedom o freedom over me over me and before i be a slave i'll be buried in my grave and go home to my lord and be free (applause) >> thank you. >> thank you very much. thank you. good afternoon, ladies and gentlemen. i'm al williams, president of the board of directors of san francisco african-american historical and cultural society. on behalf of the society and our co-presenters, the san francisco african-american chamber of commerce, the bayview ymca, senator mark leno's office, the san francisco public library, and the mayor's office of neighborhood services, welcome to the 2013 black history month program. the 2013 black history month theme is "at the crossroads of freedom and equality, the emancipation proclamation and the march o